mini design

[ata]

Hi all,

I have Aluminum: Angle 50x50x5 and Flat-bar 9.3x7.57 (in mm). I designed low cost CNC-machine, travel 100x200x50 and atached the pictures for you all to review. I have controller board and 3x 260 oz/in step motors. Iam new in the CNC and not sure if this construction strong enough for PCB.

Thanks.
Ata.

[project5k]

well the only thing that i see that i think you might wanna take a look at is your x axis... it looks to me like the total travel is shifted out from the z a bit, so that you wont be able to reach the bottom of something that you mount to your bed. That being said, when you mount your spindle, this may solve it depending on how far out from the back post the spindle centerline is... other than that, i would say it looks pretty good.. and i would think it should do fine for milling and drilling pcb's... i really wish my renderings came out that good, but it would require me to actually input textures, and proper colorings into my cad, and I just havent put that kind of time in yet..

[wcarrothers]

It looks cool although overly complex for the job/ability..

Course if the application required the ability to have work pieces hang out 3 of 4 sides then it would be the answer. Although I'd say that would be the only advantage here vs doing a moving gantry type supported on either side.

Also not sure how thick or big your motors will be but the mounting plate looks a little thin..





b.

[ata]

look out with mini drill. the drill maybe too small.

[chuckknigh]

This reminds me, heavily, of one of JCK's designs. Is that where you got your inspiration?

-- Chuck Knight

[ata]

Originally Posted by chuckknigh This reminds me, heavily, of one of JCK's designs. Is that where you got your inspiration? -- Chuck Knight

No, where is to see the JCK's designs? The idea stems from the situation because i have only 6meters angle/flatbar-aluminum, 10mm linear bearing and 10mm leadscrew. the only i bought are step mtor+driver and bearings.

I think the 10mm linear bearing, 10mm leadscrew I used in my design are also too small? What do you think?

[chuckknigh]

See what I mean?

-- Chuck Knight

[ata]

look like this...

[candle]

it will do for a given job, just get the right spindle
i don't think if dremel multitool will be good here, but i can see you'll know very soon
you don't need wattage for milling pcb, but what you do need is high rpm (up to 50000) and playless spindle - carbide routing bits help alot - they won't suffer that much from milling in glass fiber

[ata]

Can I use this wood router (RPM 33K) ?

[project5k]

i dont see why you couldnt, but im wondering if your machine will support the wieght of that monster router for such a small job....

[candle]

wood routers aren't build for accuracy i'm affride
but - could you give the exact model of this router? i really could use one in my other projects